:root {
  --paper: #fbf9f6;
  --ink: #171410;
  --green: #047857;
  --amber: #b45309;
  --red: #b42318;
  --muted: color-mix(in oklch, var(--ink) 58%, var(--paper));
  --faint: color-mix(in oklch, var(--ink) 45%, var(--paper));
  --line: color-mix(in oklch, var(--ink) 14%, var(--paper));
  --line-soft: color-mix(in oklch, var(--ink) 9%, var(--paper));
  --green-wash: color-mix(in oklch, var(--green) 7%, var(--paper));
  --amber-wash: color-mix(in oklch, var(--amber) 8%, var(--paper));
  --red-wash: color-mix(in oklch, var(--red) 7%, var(--paper));
  --sans: "Geist", "Helvetica Neue", Arial, sans-serif;
  --mono: "Geist Mono", ui-monospace, "SF Mono", Menlo, monospace;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html, body { height: 100%; }
body {
  background: var(--paper); color: var(--ink);
  font-family: var(--sans); font-size: 1rem; line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
button { font: inherit; }

/* ============ shell (sidebar + main) ============ */
.shell { display: grid; grid-template-columns: 232px 1fr; min-height: 100dvh; }
.side {
  border-right: 1px solid var(--line);
  padding: 20px 0 16px;
  display: flex; flex-direction: column; gap: 26px;
  position: sticky; top: 0; height: 100dvh;
}
.side .mark, .bar .mark {
  display: flex; align-items: center; gap: 9px; text-decoration: none;
  font-family: var(--mono); font-weight: 500; font-size: 0.8125rem; letter-spacing: 0.02em;
  padding: 0 20px;
}
.mark svg { display: block; flex: none; }
.mark .sub { color: var(--faint); }
.side nav { display: flex; flex-direction: column; }
.side nav a {
  text-decoration: none; font-size: 0.9375rem; color: var(--muted);
  padding: 10px 20px; border-left: 2px solid transparent;
}
.side nav a:hover { color: var(--ink); }
.side nav a.on { color: var(--green); border-left-color: var(--green); background: var(--green-wash); }
.side .foot { margin-top: auto; padding: 0 20px; display: grid; gap: 10px; }
.side .foot .who { font-family: var(--mono); font-size: 0.75rem; color: var(--muted); word-break: break-all; }
.side .foot button { border: 0; background: none; cursor: pointer; text-align: left; font-family: var(--mono); font-size: 0.6875rem; letter-spacing: 0.08em; color: var(--faint); padding: 6px 0; }
.side .foot button:hover { color: var(--red); }

main.content { padding: clamp(22px, 3.5vw, 42px) clamp(18px, 4vw, 48px) 72px; max-width: 1120px; min-width: 0; }

@media (max-width: 900px) {
  .shell { grid-template-columns: 1fr; }
  .side { position: static; height: auto; flex-direction: column; gap: 12px; padding: 14px 0 0; border-right: 0; border-bottom: 1px solid var(--line); }
  .side nav { flex-direction: row; overflow-x: auto; padding: 0 12px; }
  .side nav a { padding: 12px 12px; border-left: 0; border-bottom: 2px solid transparent; white-space: nowrap; }
  .side nav a.on { border-bottom-color: var(--green); background: none; }
  .side .foot { display: none; }
}

/* ============ status ============ */
.statusline { display: inline-flex; align-items: center; gap: 8px; font-family: var(--mono); font-size: 0.6875rem; letter-spacing: 0.08em; color: var(--muted); padding: 0 20px; }
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--faint); flex: none; }
.dot.live { background: var(--green); }
.dot.sandbox { background: var(--faint); }
.dot.degraded { background: var(--amber); }
.dot.down { background: var(--red); }
@media (max-width: 900px) { .statusline { padding: 0 20px 2px; } }

.banner { border: 1px solid var(--line); border-left: 3px solid var(--faint); background: #fff; padding: 14px 18px; margin-bottom: 22px; font-size: 0.9375rem; color: var(--muted); }
.banner.degraded { border-left-color: var(--amber); background: var(--amber-wash); }
.banner.down { border-left-color: var(--red); background: var(--red-wash); }
.banner.sandbox { border-left-color: var(--faint); }
.banner b { color: var(--ink); font-weight: 500; }

/* ============ typography & bits ============ */
h1 { font-size: clamp(1.4rem, 2.6vw, 1.85rem); letter-spacing: -0.025em; font-weight: 600; line-height: 1.15; }
h2 { font-size: 1.0625rem; font-weight: 600; letter-spacing: -0.01em; }
.k { font-family: var(--mono); font-size: 0.6875rem; letter-spacing: 0.09em; text-transform: uppercase; color: var(--faint); }
.k.green { color: var(--green); }
p.note { color: var(--muted); font-size: 0.9375rem; max-width: 64ch; }
.mono { font-family: var(--mono); font-size: 0.8125rem; }
.ok { color: var(--green); }
.warn { color: var(--amber); }
.alert { color: var(--red); }
.sec-top { display: flex; flex-wrap: wrap; align-items: baseline; gap: 12px 18px; margin-bottom: 18px; }
.sec-top .spacer { flex: 1; }

/* ============ cards, grids ============ */
.card { border: 1px solid var(--line); background: #fff; padding: 20px 22px; min-width: 0; }
.grid { display: grid; gap: 14px; }
.cols-4 { grid-template-columns: repeat(4, 1fr); }
.cols-2 { grid-template-columns: 1fr 1fr; }
@media (max-width: 980px) { .cols-4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .cols-2 { grid-template-columns: 1fr; } }
.stat .k { margin-bottom: 6px; }
.stat .v { font-family: var(--mono); font-size: 1.4rem; font-weight: 500; letter-spacing: -0.01em; }
.stat .s { color: var(--faint); font-size: 0.75rem; font-family: var(--mono); margin-top: 2px; }

/* ============ chart ============ */
.chart { display: flex; align-items: flex-end; gap: 3px; height: 130px; margin-top: 14px; position: relative; padding-top: 16px; }
.chart .col { flex: 1; display: flex; flex-direction: column; justify-content: flex-end; height: 100%; min-width: 0; }
.chart .col .bar-fill { background: var(--green); min-height: 2px; }
.chart .col:hover .bar-fill { background: var(--ink); }
.chart .col.zero .bar-fill { background: var(--line); }
.chart-x { display: flex; gap: 3px; margin-top: 6px; }
.chart-x span { flex: 1; text-align: center; font-family: var(--mono); font-size: 0.5625rem; color: var(--faint); overflow: hidden; white-space: nowrap; }
.chart-max { position: absolute; top: -4px; right: 0; font-family: var(--mono); font-size: 0.625rem; color: var(--faint); }

/* ============ tables ============ */
table { width: 100%; border-collapse: collapse; font-size: 0.875rem; }
th { text-align: left; font-family: var(--mono); font-size: 0.625rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--faint); font-weight: 500; padding: 10px 12px 8px 0; border-bottom: 1px solid var(--line); }
td { padding: 10px 12px 10px 0; border-bottom: 1px solid var(--line-soft); vertical-align: top; }
td.mono { font-size: 0.8125rem; }
td.num, th.num { text-align: right; padding-right: 0; font-variant-numeric: tabular-nums; }
tr:last-child td { border-bottom: 0; }
.table-scroll { overflow-x: auto; }
.table-scroll table { min-width: 560px; }
.pill { display: inline-block; font-family: var(--mono); font-size: 0.625rem; letter-spacing: 0.06em; padding: 2px 8px; border: 1px solid var(--line); color: var(--muted); }
.pill.ok { border-color: color-mix(in oklch, var(--green) 30%, var(--paper)); color: var(--green); background: var(--green-wash); }
.pill.err { border-color: color-mix(in oklch, var(--red) 30%, var(--paper)); color: var(--red); background: var(--red-wash); }

/* ============ forms & buttons ============ */
input[type=text], input[type=email], input[type=number], textarea, select {
  width: 100%; border: 1px solid var(--line); background: #fff; color: var(--ink);
  font: inherit; padding: 10px 12px; outline: none;
}
input:focus, textarea:focus, select:focus { border-color: var(--green); }
input.mono, textarea.mono { font-family: var(--mono); font-size: 0.875rem; }
textarea { resize: vertical; }
label.f { display: block; font-family: var(--mono); font-size: 0.625rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--faint); margin-bottom: 5px; }
.btn { display: inline-flex; align-items: center; justify-content: center; border: 0; cursor: pointer; background: var(--ink); color: var(--paper); font-family: var(--mono); font-size: 0.8125rem; letter-spacing: 0.02em; padding: 12px 20px; text-decoration: none; white-space: nowrap; }
.btn:hover { background: var(--green); }
.btn[disabled] { opacity: 0.5; cursor: default; }
.btn.ghost { background: none; border: 1px solid var(--line); color: var(--muted); padding: 7px 12px; font-size: 0.6875rem; }
.btn.ghost:hover { border-color: var(--green); color: var(--green); background: none; }
.btn.ghost.danger:hover { border-color: var(--red); color: var(--red); }
.btn.ghost.armed { border-color: var(--red); color: var(--paper); background: var(--red); }
.row-form { display: flex; gap: 10px; }
.row-form input { flex: 1; }
.seg { display: inline-flex; border: 1px solid var(--line); background: #fff; }
.seg button { border: 0; background: none; cursor: pointer; font-family: var(--mono); font-size: 0.6875rem; letter-spacing: 0.05em; color: var(--muted); padding: 8px 14px; }
.seg button.on { background: var(--ink); color: var(--paper); }
.copychip { display: inline-flex; align-items: center; gap: 10px; border: 1px solid var(--line); background: #fff; padding: 8px 12px; font-family: var(--mono); font-size: 0.8125rem; max-width: 100%; }
.copychip button { border: 0; background: none; cursor: pointer; color: var(--green); font-family: var(--mono); font-size: 0.625rem; letter-spacing: 0.08em; }
.copychip button:hover { text-decoration: underline; }
.copychip .val { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.reveal { border: 1px solid color-mix(in oklch, var(--green) 30%, var(--paper)); border-left: 3px solid var(--green); background: var(--green-wash); padding: 16px 18px; margin-top: 14px; }
.reveal .rk { display: flex; align-items: center; gap: 14px; margin-top: 8px; flex-wrap: wrap; }
.reveal code { font-family: var(--mono); font-size: 0.875rem; word-break: break-all; color: var(--ink); }

/* ============ playground ============ */
.pg-wrap { display: grid; grid-template-columns: minmax(0, 1fr) 240px; gap: 14px; align-items: start; }
@media (max-width: 900px) { .pg-wrap { grid-template-columns: 1fr; } }
.pg { display: grid; grid-template-rows: minmax(280px, 1fr) auto; border: 1px solid var(--line); background: #fff; height: min(58dvh, 560px); }
.pg .msgs { overflow-y: auto; padding: 18px 20px; display: grid; gap: 14px; align-content: start; }
.msg { display: grid; grid-template-columns: 56px 1fr; gap: 12px; }
.msg .who { font-family: var(--mono); font-size: 0.6875rem; color: var(--faint); padding-top: 3px; }
.msg.ai .who { color: var(--green); }
.msg p { font-size: 0.9375rem; color: var(--muted); white-space: pre-wrap; word-break: break-word; }
.msg.user p { color: var(--ink); }
.msg.err p { color: var(--red); }
.pg form { display: flex; border-top: 1px solid var(--line); }
.pg textarea { border: 0; min-height: 52px; max-height: 52px; }
.pg form .btn { border: 0; }
.pg-side { display: grid; gap: 12px; }
.pg-side .card { padding: 16px 18px; display: grid; gap: 12px; }
.pg-meta { font-family: var(--mono); font-size: 0.6875rem; color: var(--faint); margin-top: 8px; min-height: 1.2em; }
.check { display: flex; align-items: center; gap: 8px; font-size: 0.875rem; color: var(--muted); }
.check input { width: auto; accent-color: var(--green); }

/* ============ code / docs ============ */
.code { border: 1px solid var(--line); background: #fff; overflow: hidden; }
.code .codehead { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 10px 16px; border-bottom: 1px solid var(--line); }
.code .codehead .tabs2 { display: flex; gap: 2px; }
.code .codehead .tabs2 button { border: 0; background: none; cursor: pointer; font-family: var(--mono); font-size: 0.6875rem; letter-spacing: 0.05em; color: var(--muted); padding: 6px 10px; }
.code .codehead .tabs2 button.on { background: var(--ink); color: var(--paper); }
.code .codehead .copy { border: 0; background: none; cursor: pointer; color: var(--green); font-family: var(--mono); font-size: 0.625rem; letter-spacing: 0.08em; }
.code pre { font-family: var(--mono); font-size: 0.8125rem; line-height: 1.6; padding: 16px 18px; overflow-x: auto; }
.code .g { color: var(--green); }
.code .c { color: var(--faint); }

/* ============ util ============ */
.stackgap { display: grid; gap: 18px; }
.mt { margin-top: 18px; }
.mt-s { margin-top: 10px; }
section.panel { display: none; }
section.panel.on { display: block; }
.empty { border: 1px dashed var(--line); padding: 26px 28px; color: var(--muted); font-size: 0.9375rem; background: none; }
.empty ol { margin: 10px 0 0 18px; display: grid; gap: 6px; }
.empty code { font-family: var(--mono); font-size: 0.8125em; background: var(--green-wash); padding: 1px 6px; }

#toast { position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%); background: var(--ink); color: var(--paper); font-family: var(--mono); font-size: 0.75rem; padding: 10px 18px; opacity: 0; pointer-events: none; transition: opacity 0.2s; z-index: 50; }
#toast.show { opacity: 1; }

/* mobile touch targets */
@media (max-width: 767px) {
  .btn.ghost { padding: 12px 14px; font-size: 0.75rem; }
  .seg button { padding: 12px 14px; }
  .copychip button, .code .codehead .copy { padding: 10px 8px; }
  .side nav a { padding: 14px 12px; }
}

/* ============ login ============ */
header.bar-wrap { border-bottom: 1px solid var(--line); }
.bar { display: flex; align-items: center; gap: 16px; height: 56px; max-width: 1120px; margin: 0 auto; padding-inline: clamp(16px, 4vw, 40px); }
.login { min-height: calc(100dvh - 57px); display: grid; place-items: center; padding: 40px 0; }
.login .box { width: min(420px, 92vw); }
.login h1 { margin: 14px 0 6px; }
.login .box .card { margin-top: 22px; }
.login label { display: block; font-family: var(--mono); font-size: 0.6875rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--faint); margin: 0 0 6px; }
.login .step { display: grid; gap: 14px; }
.login .fine { margin-top: 16px; font-size: 0.8125rem; color: var(--faint); }